Wheel structure



' Feb. 14, 1933. A. Q. BROOKE WHEEL STRUCTURE Filed May 28,. 1930 gwvento'c Patented Feb. 14, 1933 UNITED STATES PATENT OFFICE ARTHUR O. BROOKE, OF DETROIT, MICHIGAN, ASSIGNOR T GENERAL MOTORS COR- IPORA'IION', OF DETROIT, MICHIGAN, A CORPORATION 01' DELAWARE mm. srnucronn Application filed Kay 28, 1980. Serial Io.,456,518.

This invention relates to disc wheels and has been designed particularly to prevent or reduce the noise resulting ,from theuse of such wheels.

An object of the invention is to revent or greatly reduce the drumming of me wheels and to prevent the transmission of axle noises by such wheels.

A second object is to prevent the bowling 1o noises often occurring upon the application of brakes. Other objects, such as economy of manufacture and simplicit in construction and installation will be un erstood from the following description.

The invention is illustrated by the accompanying drawing in which:

Fig. 1 is a side elevation of a wheel of the disc type equipped with my invention.

Fig. 2 is a vertical section of a portion of such a wheel.

In the drawing numeral 5 is a tire rim an 7 represents a wheel disc of known form caraying the tire rim. At 9 is a brake drum. ese parts are secured together by fastening means 11 which also secure said parts to a hub member 13.

It will be seen that a circular coil spring 15 surrounds the brake drum flange 9 at the base of the flange. The wheel disc and the to drum form an annular region occupied by the spring 15 as best shown by Fig. 2, the

' spring 15 thus engaging the drum on one side and t e wheel disc on the other.

In the case of disc wheelsit has been found 38 that axle noises are sometimes am lified and transmitted by the disc. A dlsa eable 'ng noise results due to the vibration of the disc. The use of the coil sprin as shown has been found to absorb this vi ra-' 40 tion, and prevent or greatly reduce the noise.

As a result disc wheels so equipped are substantially as free from noise as wire wheels. Also the how noise which frequently results in the apphcation of the brakes is prevented or materially reduced owing to the contact of the spring with the flange of the brake drum.

By this simple expedient I am able to avoid the drumming to'noise resulting from brake application in a of the disc wheels and the which is inexpensive and highly efiihub, a disc and a brake drum secured thereto,

said brake drum having'a substantially axial annular flange, said disc and drum together forming a recess of circular sha e at the base ofthe flange, a coil spring 0 circular outline mounted in said recess and contacting said drum and said disc.

In testimony whereof I aflix mysi ARTHUR O. B 0

nature. 

